package com.scfinance.SPD.encrypt.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Calendar;

import com.scfinance.SPD.encrypt.util.DateUtil;

public class ConvertUtil {   

	 public final static char[] BToA = "0123456789abcdef".toCharArray() ;   
	 private ConvertUtil() {   
	 }   
	  
	 /**  
	  * �?6进制字符串转换成字节数组  
	  * @param hex  
	  * @return  
	  */  
	 public static byte[] hexStringToBytes(String hex) {   
	  int len = (hex.length() / 2);   
	  byte[] result = new byte[len];   
	  char[] achar = hex.toCharArray();   
	  for (int i = 0; i < len; i++) {   
	   int pos = i * 2;   
	   result[i] = (byte) (toByte(achar[pos]) << 4 | toByte(achar[pos + 1]));   
	  }   
	  return result;   
	 }   
	 
	 
	 /**  
	  * �?6进制字符串转换成字符�?
	  * @param hex  
	  * @return  
	  */  
	 public static String hexStringToByteStr(String hex) {   
	  int len = (hex.length() / 2);   
	  byte[] result = new byte[len];   
	  char[] achar = hex.toCharArray();   
	  for (int i = 0; i < len; i++) {   
	   int pos = i * 2;   
	   result[i] = (byte) (toByte(achar[pos]) << 4 | toByte(achar[pos + 1]));   
	  }   
	  return new String(result);   
	  
	 }   
	 public static int hex2int(String s)
	 {
		 if (s.startsWith("0x")) {
			// Hex-Eingabe
			char c;
			int i,b;
			boolean error = false;
			int val=0;
			for (i=s.length()-1, b=1; i>1; i--,b*=16) {
			    c = s.charAt(i);
			    if (c>='0' && c<='9') {
				val+=((int)(c-'0') * b);
			    } else if (c>='a' && c<='f') {
				val+=(((int)(c-'a')+10) * b);
			    } else if (c>='A' && c<='F') {
				val+=(((int)(c-'A')+10) * b);
			    } else {
				return -1; // Fehler
			    }
			}
			return val;
		    } else {
			try {
			    return Integer.parseInt(s);
			} catch(NumberFormatException ex) {
			    return -1; // Fehler
			}
		    }
		}

	  
	 private static byte toByte(char c) {   
	  byte b = (byte) "0123456789ABCDEF".indexOf(c);   
	  return b;   
	 }   
	 public static int bytes2int(byte[] b)
	{
	         //byte[] b=new byte[]{1,2,3,4}; 
	         int mask=0xff;
	         int temp=0;
	        int res=0;
	        for(int i=0;i<4;i++){
	            res<<=8;
	            temp=b[i]&mask;
	            res|=temp;
	        }
	       return res;
	} 

	 
	 /**  
	  * 把字节数组转换成16进制字符�? 
	  * @param bArray  
	  * @return  
	  */  
	 public static final String bytesToHexString(byte[] bArray) {   
	  StringBuffer sb = new StringBuffer(bArray.length);   
	  String sTemp;   
	  for (int i = 0; i < bArray.length; i++) {   
	   sTemp = Integer.toHexString(0xFF & bArray[i]);   
	   if (sTemp.length() < 2)   
	    sb.append(0);   
	   sb.append(sTemp.toUpperCase());   
	  }   
	  return sb.toString();   
	 }   
	  
	 /**  
	  * 把字节数组转换为对象  
	  * @param bytes  
	  * @return  
	  * @throws IOException  
	  * @throws ClassNotFoundException  
	  */  
	 public static final Object bytesToObject(byte[] bytes) throws IOException, ClassNotFoundException {   
	  ByteArrayInputStream in = new ByteArrayInputStream(bytes);   
	  ObjectInputStream oi = new ObjectInputStream(in);   
	  Object o = oi.readObject();   
	  oi.close();   
	  return o;   
	 }   
	  
	 /**  
	  * 把可序列化对象转换成字节数组  
	  * @param s  
	  * @return  
	  * @throws IOException  
	  */  
	 public static final byte[] objectToBytes(Serializable s) throws IOException {   
	  ByteArrayOutputStream out = new ByteArrayOutputStream();   
	  ObjectOutputStream ot = new ObjectOutputStream(out);   
	  ot.writeObject(s);   
	  ot.flush();   
	  ot.close();   
	  return out.toByteArray();   
	 }   
	    
	 public static final String objectToHexString(Serializable s) throws IOException{   
	  return bytesToHexString(objectToBytes(s));   
	 }   
	    
	 public static final Object hexStringToObject(String hex) throws IOException, ClassNotFoundException{   
	  return bytesToObject(hexStringToBytes(hex));   
	 }   
	    
	 /**  
	  * @函数功能: BCD码转�?0进制�?阿拉伯数�?  
	  * @输入参数: BCD�? 
	  * @输出结果: 10进制�? 
	  */  
	 public static String bcd2Str(byte[] bytes){   
	  StringBuffer temp=new StringBuffer(bytes.length*2);   
	  
	  for(int i=0;i<bytes.length;i++){   
	   temp.append((byte)((bytes[i]& 0xf0)>>>4));   
	   temp.append((byte)(bytes[i]& 0x0f));   
	  }   
	  return temp.toString();   
	 }   
	  
	 /**  
	  * @函数功能: 10进制串转为BCD�? 
	  * @输入参数: 10进制�? 
	  * @输出结果: BCD�? 
	  */  
	 public static byte[] str2bcd(String asc , boolean padLeft) {   
	  int len = asc.length();   
	  int mod = len % 2;   
	  
	  if (mod != 0) {   
	  	if(padLeft)
	  		asc = asc + "0" ;   //左对�?
	  	else
	   		asc = "0" + asc;   //右对�?
	   		
	   len = asc.length();   
	  }   
	  
	  byte abt[] = new byte[len];   
	  if (len >= 2) {   
	   len = len / 2;   
	  }   
	  
	  byte bbt[] = new byte[len];   
	  abt = asc.getBytes();   
	  int j, k;   
	  
	  for (int p = 0; p < asc.length()/2; p++) {   
	   if ( (abt[2 * p] >= '0') && (abt[2 * p] <= '9')) {   
	    j = abt[2 * p] - '0';   
	   } else if ( (abt[2 * p] >= 'a') && (abt[2 * p] <= 'z')) {   
	    j = abt[2 * p] - 'a' + 0x0a;   
	   } else {   
	    j = abt[2 * p] - 'A' + 0x0a;   
	   }   
	  
	   if ( (abt[2 * p + 1] >= '0') && (abt[2 * p + 1] <= '9')) {   
	    k = abt[2 * p + 1] - '0';   
	   } else if ( (abt[2 * p + 1] >= 'a') && (abt[2 * p + 1] <= 'z')) {   
	    k = abt[2 * p + 1] - 'a' + 0x0a;   
	   }else {   
	    k = abt[2 * p + 1] - 'A' + 0x0a;   
	   }   
	  
	   int a = (j << 4) + k;   
	   byte b = (byte) a;   
	   bbt[p] = b;   
	  }   
	  return bbt;   
	 }   
	    
	 public static String BCD2ASC(byte[] bytes) {   
	  StringBuffer temp = new StringBuffer(bytes.length * 2);   
	  
	  for (int i = 0; i < bytes.length; i++) {   
	   int h = ((bytes[i] & 0xf0) >>> 4);   
	   int l = (bytes[i] & 0x0f);      
	   temp.append(BToA[h]).append( BToA[l]);   
	  }   
	  return temp.toString() ;   
	 }   

	 
	 /**  
	  * MD5加密字符串，返回加密后的16进制字符�? 
	  * @param origin  
	  * @return  
	  */  
	 public static String MD5EncodeToHex(String origin) {    
	     return bytesToHexString(MD5Encode(origin));   
	   }   
	    
	 /**  
	  * MD5加密字符串，返回加密后的字节数组  
	  * @param origin  
	  * @return  
	  */  
	 public static byte[] MD5Encode(String origin){   
	  return MD5Encode(origin.getBytes());   
	 }   
	    
	 /**  
	  * MD5加密字节数组，返回加密后的字节数�? 
	  * @param bytes  
	  * @return  
	  */  
	 public static byte[] MD5Encode(byte[] bytes){   
	  MessageDigest md=null;   
	  try {   
	   md = MessageDigest.getInstance("MD5");   
	   return md.digest(bytes);   
	  } catch (NoSuchAlgorithmException e) {   
	   e.printStackTrace();   
	   return new byte[0];   
	  }   
	     
	 }   
		// 取得现在的日期，格式yyyy-mm-dd hh:mm:ss
		public static String getCurrentDate2() {
			Calendar cal = DateUtil.getServerCalendar();
			int year = cal.get(cal.YEAR);
			int month = cal.get(cal.MONTH) + 1;
			int day = cal.get(cal.DAY_OF_MONTH);
			int hour = cal.get(cal.HOUR_OF_DAY);
			int minute = cal.get(cal.MINUTE);
			int second = cal.get(cal.SECOND);
			String cDate = Integer.toString(year);
			if (month < 10) {
				cDate = cDate + "-" + "0" + Integer.toString(month);
			} else {
				cDate = cDate + "-"  + Integer.toString(month);
			}
			if (day < 10) {
				cDate = cDate + "-"  + "0" + Integer.toString(day);
			} else {
				cDate = cDate + "-"  + Integer.toString(day);
			}
			if (hour < 10) {
				cDate = cDate + " " + "0" + Integer.toString(hour);
			} else {
				cDate = cDate + " " + Integer.toString(hour);
			}
			if (minute < 10) {
				cDate = cDate + ":" + "0" + Integer.toString(minute);
			} else {
				cDate = cDate + ":" + Integer.toString(minute);
			}
			if (second < 10) {
				cDate = cDate + ":" + "0" + Integer.toString(second);
			} else {
				cDate = cDate + ":" + Integer.toString(second);
			}
			return cDate.trim();
		}

		// 取得现在的日期，格式yyyymmddhhmmss
		public static String getCurrentDate() {
			Calendar cal = DateUtil.getServerCalendar();
			int year = cal.get(cal.YEAR);
			int month = cal.get(cal.MONTH) + 1;
			int day = cal.get(cal.DAY_OF_MONTH);
			int hour = cal.get(cal.HOUR_OF_DAY);
			int minute = cal.get(cal.MINUTE);
			int second = cal.get(cal.SECOND);
			String cDate = Integer.toString(year);
			if (month < 10) {
				cDate = cDate + "0" + Integer.toString(month);
			} else {
				cDate = cDate + Integer.toString(month);
			}
			if (day < 10) {
				cDate = cDate + "0" + Integer.toString(day);
			} else {
				cDate = cDate + Integer.toString(day);
			}
			if (hour < 10) {
				cDate = cDate + "0" + Integer.toString(hour);
			} else {
				cDate = cDate + Integer.toString(hour);
			}
			if (minute < 10) {
				cDate = cDate + "0" + Integer.toString(minute);
			} else {
				cDate = cDate + Integer.toString(minute);
			}
			if (second < 10) {
				cDate = cDate + "0" + Integer.toString(second);
			} else {
				cDate = cDate + Integer.toString(second);
			}
			return cDate.trim();
		}
		

		// 对字符串 - 在右边填充指定符�?
		public static String addSymbolAtRight(String s, int fullLength,
char addSymbol) {
		if (s == null) {
			return null;
		}
		String result = s;
		int length = s.length();
		if (length >= fullLength) {
			System.out.println("StringTools:addSymbolAtRight() --> Warinning ,the length is equal or larger than fullLength!");
		} else {
			char[] newChars = new char[fullLength];
			for (int i = 0; i < length; i++) {
				newChars[i] = s.charAt(i);
			}
			for (int j = length; j < fullLength; j++) {
				newChars[j] = addSymbol;
			}
			result = new String(newChars);
		}
		return result;
	}
		
		// 对字符串 - 在左边填充指定符�?
		public static String addSymbolAtLeft(String s, int fullLength,char addSymbol) {
				if (s == null) {
					return null;
				}
				int distance = 0;
				String result = s;
				int length = s.length();
				distance = fullLength - length;
				if (distance <= 0) {
					System.out.println("StringTools:addSymbolAtleft() --> Warinning ,the length is equal or larger than fullLength!");
				}else {
					char[] newChars = new char[fullLength];
					for (int i = 0; i < length; i++) {
						newChars[i + distance] = s.charAt(i);
					}
					for (int j = 0; j < distance; j++) {
						newChars[j] = addSymbol;
					}
					result = new String(newChars);
				}
				return result;
		}

		
	}
